1 /*
2 * Copyright (c) 2025 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "scsireadcapacity10_fuzzer.h"
17 #include <cstring>
18 #include <securec.h>
19 #include <scsi/sg.h>
20 #include <unistd.h>
21 #include "hdf_log.h"
22 #include "scsicommonfunction_fuzzer.h"
23
24 using namespace OHOS::HDI::Usb::ScsiDdk::V1_0;
25
26 namespace OHOS {
27 namespace SCSI {
ConstructParamsFromData(ScsiPeripheralReadCapacityRequest & request,const uint8_t * data,size_t size)28 static void ConstructParamsFromData(ScsiPeripheralReadCapacityRequest& request, const uint8_t* data, size_t size)
29 {
30 if (data == nullptr || size < sizeof(uint32_t)) {
31 return;
32 }
33
34 (void)memcpy_s(&request.lbAddress, sizeof(uint32_t), data, sizeof(uint32_t));
35 size_t offset = sizeof(uint32_t);
36
37 if (size >= offset + sizeof(uint8_t)) {
38 request.control = *(data + offset);
39 offset += sizeof(uint8_t);
40 }
41
42 if (size >= offset + sizeof(uint8_t)) {
43 request.byte8 = *(data + offset);
44 offset += sizeof(uint8_t);
45 }
46
47 if (size >= offset + sizeof(uint32_t)) {
48 (void)memcpy_s(&request.timeout, sizeof(uint32_t), data + offset, sizeof(uint32_t));
49 }
50 }
51
ScsiReadCapacity10FuzzTest(const uint8_t * data,size_t size)52 bool ScsiReadCapacity10FuzzTest(const uint8_t *data, size_t size)
53 {
54 sptr<IScsiPeripheralDdk> scsiPeripheralDdk = IScsiPeripheralDdk::Get();
55 if (scsiPeripheralDdk == nullptr) {
56 HDF_LOGE("%{public}s: get ddk failed", __func__);
57 return false;
58 }
59 int32_t ret = scsiPeripheralDdk->Init();
60 if (ret != HDF_SUCCESS) {
61 HDF_LOGE("%{public}s: init failed, ret = %{public}d", __func__, ret);
62 return false;
63 }
64
65 ScsiPeripheralDevice device;
66 ret = ScsiFuzzTestHostModeInit(scsiPeripheralDdk, device);
67 if (ret != HDF_SUCCESS) {
68 HDF_LOGE("%{public}s: scsi peripheral open device failed, ret = %{public}d", __func__, ret);
69 return false;
70 }
71 ScsiPeripheralReadCapacityRequest request = {};
72 ConstructParamsFromData(request, data, size);
73 ScsiPeripheralCapacityInfo capacityInfo;
74 ScsiPeripheralResponse response;
75 ret = scsiPeripheralDdk->ReadCapacity10(device, request, capacityInfo, response);
76
77 ret = scsiPeripheralDdk->Close(device);
78 if (ret != HDF_SUCCESS) {
79 HDF_LOGE("%{public}s: close device failed", __func__);
80 scsiPeripheralDdk->Release();
81 return false;
82 }
83 ret = scsiPeripheralDdk->Release();
84 if (ret != HDF_SUCCESS) {
85 HDF_LOGE("%{public}s: release failed", __func__);
86 return false;
87 }
88 return true;
89 }
90 } // namespace SCSI
91 } // namespace OHOS
92
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)93 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
94 {
95 OHOS::SCSI::ScsiReadCapacity10FuzzTest(data, size);
96 return 0;
97 }